If pressure from outside the lungs causes atelectasis, your doctor will treat the cause of the pressure. For example, if the cause is a tumor or fluid buildup, your doctor will remove the tumor or fluid. This will allow your lung to fully expand. Atelectasis Caused by a Blockage
Pilus. Definition. noun, plural: pili. (microbiology) Short, filamentous projection on a bacterial cell, used not for motility but for adhering to other bacterial cell (especially for mating) or to animal cells. Supplement. Bacterial pili are involved in cell adhesion.
Long, thin flagella are used by some bacteria to move about. Sex pili allow bacteria to share genes. Shorter extensions, called fimbriae (singular fimbria), enable bacteria to adhere to surfaces and potentially infect the cells of their host.Gram-negative Bacterial Fimbriae. Most Gram-negative bacteria have these short, fine appendages surrounding the cell.ex pili allow bacteria to share genes. Shorter extensions, called fimbriae (singular fimbria), enable bacteria to adhere to surfaces and potentially infect the cells of their host. Gram-negative Bacterial Fimbriae. Most Gram-negative bacteria have these short, fine appendages surrounding the cell.